Signature Ruby on back of earring. Authentic: Stamps include RC 18Kt Italy 1226VI.

My items are guaranteed 100% authentic. By Roberto Coin made in Italy. I welcome any other questions/inquiries you may have. Feedback: My feedback policy has recently changed in order for it to be more beneficial for all involved. The item "New Authentic Roberto Coin 18kt yellow gold 20mm Symphony Barocco hoop earrings" is in sale since Saturday, May 5, 2018.